晚更新世以来轨道尺度东亚夏季风环流和降水演化的解耦  

Decoupled orbital-scale variability of late Pleistocene-Holocene monsoonal circulation and rainfall in East Asia

作　　者：靳立亚 Andrey Ganopolski Matteo Willeit 鹿化煜 陈发虎 张肖剑 Liya Jin;Andrey Ganopolski;Matteo Willeit;Huayu Lu;Fahu Chen;Xiaojian Zhang(School of Atmospheric Sciences,Chengdu University of Information Technology,Chengdu 610225,China;Key Laboratory of Western China’s Environmental Systems(Ministry of Education),College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,China;Potsdam Institute for Climate Impact Research,Potsdam 14412,Germany;School of Geography and Ocean Science,Frontiers Science Center for Critical Earth Material Cycling,Nanjing University,Nanjing 210023,China;Alpine Paleoecology and Human Adaption Group,Key Laboratory of Alpine Ecology,Institute of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing 100101,China)

机构地区：[1]School of Atmospheric Sciences,Chengdu University of Information Technology,Chengdu 610225,China [2]Key Laboratory of Western China’s Environmental Systems(Ministry of Education),College of Earth and Environmental Sciences,Lanzhou University,Lanzhou 730000,China [3]Potsdam Institute for Climate Impact Research,Potsdam 14412,Germany [4]School of Geography and Ocean Science,Frontiers Science Center for Critical Earth Material Cycling,Nanjing University,Nanjing 210023,China [5]Alpine Paleoecology and Human Adaption Group,Key Laboratory of Alpine Ecology,Institute of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing 100101,China

出　　处：《Science Bulletin》2023年第9期897-901,M0004,共6页科学通报（英文版）

基　　金：supported by the National Natural Science Foundation of China (42171152,41775070,and 41920104005);the Fundamental Research Funds for the Central Universities (0209-14380107);the Research Funds for the Frontiers Science Center for Critical Earth Material Cycling,Nanjing University。

摘　　要：晚更新世以来东亚夏季风轨道尺度演化特征和物理机制存在很大争议,洞穴石笋氧同位素等记录揭示过去64万年以来东亚夏季风的演化,以约2万年周期为主,响应于低纬夏季太阳辐射引起的海陆热力差异变化;而黄土磁化率和10Be等记录揭示过去80万年以来东亚夏季风变化以10万年周期为主,受高纬冰盖波动和大气CO_(2)浓度的影响.基于地球系统模式CLIMBER-2在地球轨道参数驱动下进行的过去300万年地球系统模拟试验显示,过去80万年以来东亚夏季风环流与受夏季风影响的降水存在明显的解耦现象:即2万年周期变化的东亚夏季风环流和10万年周期交化的东亚夏季风降水,分别响应于岁差和CO_(2)浓度变化.本研究揭示了地球气候系统内部过程,尤其是碳循环对东亚夏季风响应地球轨道变化具有重要调节作用.The East Asian summer monsoon(EASM)is a critical component of the global climate system due to its association with rainfall in areas hosting over one sixth of the global population[1].Understanding the periodicities of summer rainfall influenced by the EASM can help constrain future climate projections.However,mechanisms of the response of the EASM associated summer rainfall variability to orbital forcing during the late Pleistocene-Holocene remains uncertain[2,3].

关 键 词：晚更新世以来 地球轨道 周期变化 夏季风 

分 类 号：P532[天文地球—古生物学与地层学]